Mowing-machine construction



WIT/03 5555 @7/W Aug. 6, 1929. E. D. LENHART 1,723,976

MOWING MACHINE CONSTRUCTION File Ma 1927 3 Sheets-Sheet 1 U II I ll IIHHLLHHI N; Q

Zlwuzntow 1520100062 Lf/VAA/i'f Aug. 6,1929. E. D. LENHART 1,723,976

MOWING MACHINE CONSTRUCTI ON Filed March 14, 1927 5 Sheet-Sheet 2 m| e aAug. 6, 1929.

E. D. LENHART MOWING MACHINE CONSTRUCTION Filed March 14, L927 5Sheets-Sheet 3 gwue'ntov Elf/V/OMSlZLE/Y/l/IFT ado: new:

Patented Aug. 6, 1929.

UNITED STATES earner OFFICE.

ELENIOUS I). LEITHABI', OF HOW'ARD, FJflU'lI-I DAKOTA.

MOWING-MACHINE CUiIl'tilERUClHCOIN.

Application filed March it, 1927. serial No. 175,364.

This invention relates to a mowing machine construction and moreparticularly to an improved sickle bar mechanism therefor, and

has for its primary object a novel design of sickle bar construction incombination with gear and disk so that the same will have an 0 opposingrelation with the blade for holding the same in its proper positionduring the operation thereof by the pin carried by the disk.

Besides the above, my invention is distinguished in the novel manner ofassembling and connecting the bearing brace with the disk and gear sothat these parts may be removed as a unit for allowing ready access tothe blade, while at the same time practically eliminating lost motion orplay between the parts.

With these and other objects in view, my invention will be betterunderstood from the accompanying drawings, wherein Figure 1 is a topplan view of theinvention;

Figure 2 is a sectional view on the line 2-2 of Figure 1;

Figure 3 is a sectional View on the line 33 of Figure 1;

Figure 4: is a sectional view on the line 4:4: of Figure 1;

Figure 5 is a detail plan view;

Figure 6 is a perspective view of a por tion of the sickle bar;

Figure 7 is a perspective view of a disk and its associated parts;

Figure 8 is a sectional view through the head portion of the sickle barand its associated parts.

Again referring to the drawings illustrating one of the manyconstructions of my invention, the numeral 1 designates in its entiretymy improved sickle bar construction operated by my improved design ofdrive mechanism, designated by the numeral 2, which in turn is operatedby the wheel structure SE of the mowing machine. My improved sickle barconstruction comprises a. bar lupon which is flatly arranged forreciprocatory movement the blade 5 which is provided with a horizontalhead 6 in which is formed a slot 7. Detachably secured to the bar 4. isa bracket 8 provided with a vertical bearing 8 which is arrangedimmediately above the head 6 and which supports certain parts of themechanism in a manner that they may be removed as a unit to allow readyaccess to the blade. One manner of accomplishing this desired result isby forming the gear 9 solid with the disk 10 that carries the pin 11working in the slot 7 and arranging this combination gear and disk upona stub shaft 12 mounted in the bearing 8; Thus it will be seen that byremoving the bolts 13 that secure the bracket to the bar, the bracket,gear, disk and pin may be removed as a unit to allow the removal oradjustment of the blade. Any suitable mechanism may be designed foroperating the disk, but I have found it an advantage to so design andarrange the various parts of the drive mechanism that the same may beswung into multiplicity of angular positions so that the sickle bar maycut at various angular positions.

In the drawings, I have illustrated a main drive construction 14consisting of the main shaft 15 arranged in parallel relation to thewheel 3 and having a drive gear 16 at one end and a driven gear 17 atthe other end meshing with a gear 18 that receives power directly off ofthe internal gear 19 through the pinion 20. This internal gear 19 issecured to the wheel 3 of the vehicle.

The auxiliary drive mechanism is connected to the main drive mechanismin a manner to have relative swinging m0vement therewith and toaccomplish this desired result I provide the housing 21 arranged atright angles to the shaft 15 and terminating in a bracket 22 swinginglyassociated with the shaft 15 to properly hold the driven gear 23 inconstant mesh with gear 16 but at the same time allow the gear 28 to beadjusted around gear 16 to accommodate the angular adjustments of thehousing 21. This auxiliary mechanism also includes a driven shaft 24:terminating in a beveled gear 25 engaging an idle gear 26 tion of thewheel 3 sets the main and auxiliary drive mechanism into operation forrotatmg gear 9, and as the gear 9 is solid with the disk 10 the latterwill be rotated in unison to give circular movement to the pin 11. Thiscircular-travel of the pin 11 within the slot reciprocates the knife sothat the same may perform its usual function with relation to the sicklebar. When it is necessary to change the angular position of the sickle;bar,' it is only necessary to raise the structure swinging the sicklebar structure and ;.auxiliary drive mechanism as a unit about lgear 16.This swinging action in no way interferes with the efficient operationof the sickle bar, as the drive mechanism is so designed as to operatethe blade in any of its angular positions.

This device is especially constructed to permit the use thereof onhighways, and

, particularly for moving along the right-of- Ways of railroads and thelike.

' "I wish to call particular attention to the fact that the parts are sodesigned and arranged that assembling of the mechanism is facilitated,thereby materially reducing the cost of manufacture, and besides certainvital parts may be removed with very little effort for allowing readyaccessibility to the blade. It is, of course, to be understood that thevarious parts may be designed in various other manners than illustratedand asso ciated-in other relations and other forms of drive mechanismmay be used for operating my improved sickle bar construction and,therefore, I do not desire to be limited in any manner except as setforth in the following claims.

I claim 1. In a mowing machine, a bar, a blade having a flat slidingengagement with the bar and provided with a horizontal head having acorresponding engagement with the bar and having a slot, a bracketdetachably secured to the bar and having a vertical bearing arrangedimmediately above the head, a shaft journaled in the bearing, a bevelgear and disk fixed to the shaft between the bearing and head andarranged in parallel relation to the head, a pin carried by the disk andworking in said slot, :1 gear engaging said first gear, and means foroperating said second gear.

2. In a mowing machine, a bar, a blade slidably mounted on the bar andprovided with a slot, a bracket secured to the bar, a combined gear anddisk rotatably supported by the bracket and provided with a pinarranged-in said slot, a shaft rotatably sup ported near and in parallelrelation to one of the wheels of the machine, means establishing adriving connection between the wheel and shaft, a housing arranged atright angles to the shaft and pivotally connected thereto and to thebar, a second shaft journaled in the housing, intermeshing gear carriedby the shafts and a ear carried by said second shaft and ines hing withsaid first gear.

In testimon whereof I afiix my signature.

E ENIOUS D. LENHART.

